Mechanical Fitting Course

Lesson 1 • Trade Documentation and Communication

Explains job cards, work orders, and technical communication methods used on the job. Accurate documentation ensures traceability and quality assurance.

Lesson 2 • The Mechanical Fitting Trade

Defines the trade's scope, typical industries, and career pathways. Establishes context for all subsequent technical learning in the course.

Lesson 3 • Workplace Safety Fundamentals

Covers hazard identification, personal protective equipment, and safe work procedures. Safety principles underpin every practical task taught throughout the course.

Lesson 1 • Precision Measurement Instruments

Introduces verniers, micrometers, dial indicators, and gauge blocks. Correct instrument selection and use ensure components meet dimensional requirements.

Lesson 2 • Geometric Dimensioning and Tolerancing

Explains form, orientation, and position tolerances as applied to fitting work. Understanding tolerancing prevents assembly errors and component rejection.

Lesson 3 • Reading Engineering Drawings

Teaches orthographic projection, drawing conventions, and title block interpretation. Drawing literacy is essential for executing all fitting work to specification.

Lesson 1 • Cutting and Shaping Hand Tools

Covers hacksaw, cold chisel, and file selection and technique. Correct tool choice and cutting method directly affect surface quality and dimensional accuracy.

Lesson 2 • Thread Cutting by Hand

Introduces taps, dies, and thread repair tools for producing and restoring threads. Hand threading is a fundamental fitting skill applied across all assembly work.

Lesson 3 • Clamping, Holding, and Vise Work

Covers vise selection, jaw protection, and workholding for bench operations. Secure workholding prevents movement, injury, and dimensional error during fitting.

Lesson 1 • Drilling Machine Types and Setup

Explains pedestal, bench, and radial drilling machines and their setup procedures. Correct machine selection and setup are prerequisites for accurate hole production.

Lesson 2 • Speeds, Feeds, and Cutting Fluids

Teaches calculation of cutting speed and feed rate for various materials. Proper parameters extend tool life and produce holes within tolerance.

Lesson 3 • Reaming and Countersinking Operations

Introduces hand and machine reaming to achieve precise hole diameter and finish. Reaming follows drilling to bring holes to final size for close-tolerance fits.

Lesson 1 • Keys, Keyways, and Splines

Covers parallel, Woodruff, and feather keys for transmitting torque between shafts and hubs. Correct key fitting prevents fretting, backlash, and component damage.

Lesson 2 • Locking and Retention Devices

Introduces spring washers, locking wire, thread-locking compounds, and castellated nuts. Retention devices prevent fastener loosening under vibration and dynamic loads.

Lesson 3 • Fastener Types and Standards

Covers bolts, studs, screws, and nuts across common thread standards. Correct fastener identification prevents mismatched assemblies and structural failures.

Lesson 4 • Pins, Circlips, and Retaining Rings

Explains dowel pins, taper pins, circlips, and retaining rings for locating and retaining components. Proper installation prevents axial movement and misalignment in assemblies.

Lesson 1 • Seals and Gaskets

Introduces lip seals, O-rings, and static gaskets for fluid retention in assemblies. Correct seal selection and installation prevent leakage and contamination.

Lesson 2 • Bearing Installation and Removal

Teaches press fitting, induction heating, and puller techniques for bearing handling. Correct installation prevents premature failure caused by damage during fitting.

Lesson 3 • Bearing Types and Selection

Covers ball, roller, taper, and thrust bearing types and their load characteristics. Correct bearing selection is fundamental to reliable rotating machinery performance.

Lesson 4 • Bearing Failure Analysis

Teaches identification of spalling, brinelling, fretting, and contamination failure modes. Failure analysis guides corrective action and prevents repeat failures.

Lesson 1 • Belt and Chain Drive Alignment

Explains pulley and sprocket alignment using straightedges and laser tools. Misaligned drives cause rapid belt and chain wear and increased power consumption.

Lesson 2 • Coupling Types and Selection

Introduces rigid, flexible, and fluid couplings and their application criteria. Correct coupling selection accommodates misalignment and transmits torque efficiently.

Lesson 3 • Laser Alignment Systems

Covers laser alignment tool setup, measurement, and correction procedures. Laser systems improve speed and accuracy over dial indicator methods for precision machinery.

Lesson 4 • Shaft Inspection and Preparation

Covers shaft straightness, surface condition, and dimensional checks before assembly. Proper shaft preparation ensures correct bearing seating and coupling fit.

Lesson 1 • Overhaul and Reassembly Procedures

Teaches reassembly sequences, clearance checks, and functional testing after overhaul. Correct reassembly restores equipment to its original performance specification.

Lesson 2 • Disassembly and Component Inspection

Covers planned disassembly sequences, component marking, and inspection criteria. Correct disassembly preserves component condition and enables accurate reassembly.

Lesson 3 • Condition Monitoring Techniques

Introduces vibration analysis, thermography, and oil analysis for ongoing health monitoring. Condition monitoring detects developing faults before catastrophic failure occurs.

Lesson 4 • Systematic Fault Diagnosis

Teaches structured fault-finding using symptom analysis, elimination, and testing. A systematic approach reduces diagnostic time and prevents misdiagnosis.